/**
 * @Author: HongXiaoHan
 * @Description
 * @Date: 2020/8/21 12:51
 */
public interface d{

    void a();


    void b();
    void c();

}

abstract class lll implements d{
    @Override
    public void a() {

    }

    @Override
    public void b() {

    }

    @Override
    public void c() {

    }
}

class s{
    public static void main(String[] args) {
         l(new lll() {
             @Override
             public void b() {
                 System.out.println("你好");
             }
         });
    }

    public static void l(d l){
        l.b();
    }
}